EP2992853B1 - Method for producing a denture and denture porudced with this method - Google Patents

Method for producing a denture and denture porudced with this method Download PDF

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Publication number
EP2992853B1
EP2992853B1 EP13808058.5A EP13808058A EP2992853B1 EP 2992853 B1 EP2992853 B1 EP 2992853B1 EP 13808058 A EP13808058 A EP 13808058A EP 2992853 B1 EP2992853 B1 EP 2992853B1
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EP
European Patent Office
Prior art keywords
abutments
titanium
teeth
implants
bar
Prior art date
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Application number
EP13808058.5A
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German (de)
English (en)
French (fr)
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EP2992853A1 (en
Inventor
Victor CUBILLO BLASCO
Volker SAMREI
Markus LAUCH
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Marcus Lauch SL
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Marcus Lauch SL
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    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools
    • A61C8/0048—Connecting the upper structure to the implant, e.g. bridging bars
    • A—HUMAN NECESSITIES
    • A61—MEDICAL OR VETERINARY SCIENCE; HYGIENE
    • A61C—DENTISTRY; APPARATUS OR METHODS FOR ORAL OR DENTAL HYGIENE
    • A61C8/00—Means to be fixed to the jaw-bone for consolidating natural teeth or for fixing dental prostheses thereon; Dental implants; Implanting tools

Definitions

  • the present invention can be included in the technical field of methods for manufacturing dental prosthesis and in that of dental prosthesis manufactured by means of said methods.
  • the object of the invention is a method for manufacturing a dental prosthesis which allows the subsequent implantation of the prosthesis in the user immediately, without having to use a provisional prosthesis.
  • a prosthetic structure usually consists of a base body to attach the prosthetic structure to the dental implant, and a main body individually adapted to the tooth to be replaced or to the remaining teeth, or to the maxilla conditions.
  • the main body does not constitute the visible area of the implanted tooth, since it is covered up by the prosthetic restoration.
  • a wax pattern substantially corresponding to the main subsequent body is moulded over a base body, commercially available.
  • a pattern is then made from said wax pattern.
  • the wax is removed by melting in a furnace, obtaining a negative pattern of the main body.
  • this negative pattern is filled with a suitable molten material such as, for example, noble alloys, semi-noble or alloys devoid of noble metals.
  • a suitable molten material such as, for example, noble alloys, semi-noble or alloys devoid of noble metals.
  • milled structures are made from a metal block (generally Titanium), previously scanning the positive pattern obtained from the negative pattern.
  • a metal block generally Titanium
  • the cost is very high and its manufacture requires a longer time than the time available to perform reconstruction on implants by means of immediate loading.
  • All-on-four technique (all-on-4TM), developed by Dr Paolo Maló, is a system that allows fixed complete restoration with implants in the superior and/or inferior maxilla of the completely edentulous patient, or that patient who will shortly be bound to complete edentulism.
  • the lower implants are interforaminal implants, and in that area their insertion is usually possible, even in extreme reabsorption situations; while in the superior maxilla the implants are placed between the maxillary sinuses, greatly reducing the regeneration requirement which would contraindicate the technique, with success rates higher than 95%.
  • the original technique requires cooperation with the laboratory so that, in a few hours, the patient leaves the clinic with the abutments being inserted and the fixed implant-supported prosthesis being screwed up.
  • the treatment provides the patient a fixed acrylic resin restoration with no metallic frame, so as to proceed, after 5 or 6 months, to take the dental impressions in order to realize the definitive restoration, acrylic or ceramic upon a titanium structure or another material structure.
  • the philosophy of the all-on-four procedure is based, for the inferior maxilla, in the use of four implants in the interforaminal anterior mandibular area and in the angulation of the posterior implants with the apices thereof towards the mesial area, so that the intersection point may be situated at the vertical of the mentalis or, even a bit distal from it, so as to reduce the distal cantilever of the future prosthesis and to increase the implant-bone binding surface, since longer implants may be used.
  • the anchoring of the implants in the anterior bone improves stability, since this is usually of better quality than that located in the posterior areas of the maxillae.
  • the implants are fixed to each other by means of a resin prosthesis adapted thereto, prosthesis which is implanted in the patient for said patient to keep it for a period of approximately 5 or 6 months.
  • the definite structure is manufactured once the implants are totally osseointegrated. That means that accuracy has to be optimum to achieve a completely passive adjustment, without lateral forces on the implants. If this did not happen, said structure would have to be made again, with the consequent waste of time and cost.
  • the present invention solves the technical problem stated, by means of a method for manufacturing a dental prosthesis according to claim 3 which allows to provide the patient with fixed teeth immediately, avoiding transition periods with provisional removable prosthesis. For this purpose, it is necessary a close collaboration oral surgeon- dental technician.
  • the invention also relates to a dental prosthesis according to claim 1.
  • the method for manufacturing a dental prosthesis comprises several steps:
  • the method comprises a brushing and polishing step of the dental prosthesis obtained in the previous step.
  • the invention also refers to a dental prosthesis comprising a set of teeth, a set of abutments which can be coupled to a set of implants and a titanium structural bar welded to the abutments, wherein the teeth are attached to the abutments and the titanium structural bar by means of a filling composite.
  • the titanium structural bar serves as a support for the teeth and gingiva, in case this is necessary.
  • the prosthesis will be modified in a few hours so as to achieve total occlusion and refilling of spaces that appear between the prosthesis and the gingiva, originated by post-surgical closing and gingival remodelling which is not an object of the present invention.
  • any micro-maladjustment of the bar with respect to the implants position is defined in the pattern by abutments, due to the micro-movement the bone allows to the recently placed implants without risking its integration.
  • the method of manufacturing of a dental prosthesis according to the present invention makes it possible to obtain a high resistance dental prosthesis, since the metallic structure made the first day provides a tensile strength impossible to achieve with the methods known in the state of the art which use prosthesis without a metallic reinforcement.
  • the volume of the dental prosthesis obtained with the manufacture method of the present invention is reduced with respect to the volume of the dental prosthesis obtained with state-of-the-art methods, providing important functional, aesthetic and hygienic improvements to the patient.
  • the dental prosthesis finishing obtained with the manufacturing method of the present invention, is more similar to a real denture than any of the prosthesis obtained using the methods from the state of the art.
  • the use of the titanium bar allows the volume of said element supporting the stress, to be very much reduced since its hardness is much higher than that of the acrylic resin, conventionally used for provisional dentures used in the state of the art.
  • the special configuration of the prosthesis obtained by the manufacturing method of the present invention allows ferulization of implants immediately after their placement, obtaining a homogeneous distribution of the loads among the implants involved. This influences positively on the bone-implant integration, since the load amount received by each implant is reduced.
  • the loads received by each implant are very different, reaching sometimes undesired load peaks which are adverse to osseointegration.
  • the composite used in the prosthesis of the present invention absorbs part of the forces exerted thereon.
  • the special configuration of the prosthesis obtained by the manufacturing method of the present invention allows the implants, once placed and integrated with the bone, not to undergo any movement, as lateral forces will be applied on them which are habitual in orthodontics. The consequence of these forces is the bone loss around the implant and the subsequent loss thereof.
  • the economic cost for the patient is reduced with the dental prosthesis obtained by the manufacturing method of the present invention, since a single prosthesis is manufactured, the structure of which will be the same from the first day, even though it undergoes retouching, as well as reducing the possibilities of maladjustment and subsequent repetition of the work done.
  • adjustments, fixings or corrections have to be done in the denture or bar, these are done in a few hours and with a minimal cost. Always keeping the initial properties of the assembly unaltered.
  • the dental prosthesis hygiene improves the hygiene of the space between prosthesis and gingiva due to its reduced volume, and with it the gingiva area covered by the prosthesis. By reducing this area to a minimum, the area which has to be cleaner is also reduced.
  • the method for manufacturing a dental prosthesis comprises a preparation step, in which one or several individual trays are made to take an impression (1) of the condition of the teeth shape (2) of the patient and they are preferably made of an acrylic material on a plaster base.
  • This preparation step also comprises a step for the production of a surgical splint (3) which is used to place implants (4) and abutments (5) of the dental prosthesis in their predesigned position.
  • the method also comprises a step to take records of the impression, to obtain a mould (8) corresponding to the negative shown in Figure 5 , of the implants (4) placed in the patient maxilla, as it is shown in Figure 4 .
  • the method comprises a preparation step of the transferred pattern (7), which is the positive obtained from plaster casting of the mould (8) previously obtained, using pieces being analogous to the implants to which abutments (5) will be fixed, said abutments making up the base of the structure main body.
  • the manufacturing method comprises a forming step, for the forming of teeth (2) and of a structural titanium bar (6) comprising a folding substep for the structural titanium bar (6) to be adapted to the curvature defined by the abutments (5) of the dental prosthesis.
  • the method comprises a testing step to verify the position of the abutments (5) and implants (4) by means of the surgical splint (3).
  • the method comprises a testing step to check the teeth (2) over the pattern (7).
  • the method comprises a welding step to weld the structural titanium bar (6) previously folded to the abutments (5) fixed to the pattern (7).
  • the method comprises a testing step to check the teeth (2) over the pattern (7) with the structural titanium bar (6) already welded to the abutments (5).
  • the method comprises a welding step to weld retaining elements (9) to the titanium structural bar (6).
  • the method comprises a relocation step to relocate the teeth (2) formed with composite in the pattern (7) where the titanium structural bar (6) has been folded, welded and made opaque.
  • the method comprises a finishing step, in which discrepancies between the titanium structural bar and the teeth arch are sealed and refilled by means of composite.
  • the method comprises a brushing and polishing step, to brush and polish the dental prosthesis obtained from the previous step.
  • the method includes the following steps of:
  • the invention also refers to a dental prosthesis comprising a set of teeth (2), a set of abutments (5) which can be coupled to a set of implants (4) and a titanium structural bar (6) welded to said abutments (5), where the teeth (2) are attached to the abutments (5) and to the titanium structural bar (6) by means of filling composite (10).
  • the titanium structural bar (6) further comprises retaining elements (9) welded to said titanium structural bar (6).
  • the abutments (5), the titanium structural bar (6) and the retaining elements (9) are made of Titanium grade 5, and more preferably, the titanium structural bar (6) has a 3 mm section and the retaining elements (9) a 1.5 mm section.
  • the welding steps are carried out by a Nd: YAG laser type, accomplishing a welding in the whole depth of the titanium structural bar (6), obtaining a rigid structure, of high resistance and great lightness.

Landscapes

  • Health & Medical Sciences (AREA)
  • Oral & Maxillofacial Surgery (AREA)
  • Orthopedic Medicine & Surgery (AREA)
  • Dentistry (AREA)
  • Epidemiology (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Animal Behavior & Ethology (AREA)
  • General Health & Medical Sciences (AREA)
  • Public Health (AREA)
  • Veterinary Medicine (AREA)
  • Dental Prosthetics (AREA)
EP13808058.5A 2013-07-03 2013-09-19 Method for producing a denture and denture porudced with this method Active EP2992853B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
ES201331001A ES2526364B1 (es) 2013-07-03 2013-07-03 Procedimiento para la fabricación de una prótesis dental y prótesis dental fabricada con dicho procedimiento
PCT/ES2013/070656 WO2015001150A1 (es) 2013-07-03 2013-09-19 Procedimiento para la fabricación de una prótesis dental y prótesis dental fabricada con dicho procedimiento

Publications (2)

Publication Number Publication Date
EP2992853A1 EP2992853A1 (en) 2016-03-09
EP2992853B1 true EP2992853B1 (en) 2016-11-16

Family

ID=49779931

Family Applications (1)

Application Number Title Priority Date Filing Date
EP13808058.5A Active EP2992853B1 (en) 2013-07-03 2013-09-19 Method for producing a denture and denture porudced with this method

Country Status (4)

Country Link
EP (1) EP2992853B1 (es)
ES (1) ES2526364B1 (es)
PT (1) PT2992853T (es)
WO (1) WO2015001150A1 (es)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20180104030A1 (en) * 2015-04-07 2018-04-19 Marco BARDELLI A method for the production of a prosthetic article
ES2693171A1 (es) * 2017-06-05 2018-12-07 Santiago ESTREMS DIAZ Implante de lámina continua, equipamiento y método de implantación
CN113143509B (zh) * 2021-05-24 2022-01-07 深圳市金悠然科技有限公司 一种高强度义齿及其制造方法

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE470049B (sv) * 1991-03-01 1993-11-01 Nobelpharma Ab Anordning vid bro som är individualanpassad till i tandben implanterade element
US6116070A (en) * 1998-11-11 2000-09-12 Advanced Research And Technology Institute Superplastically-formed prosthetic components, and equipment for same
US6905336B2 (en) * 2002-07-23 2005-06-14 Robert Summers Impression support system for dental implants
FR2977142B1 (fr) * 2011-07-01 2014-06-13 Euroteknika Dispositif pour la pose d'une prothese dentaire
CN104053414A (zh) * 2011-10-27 2014-09-17 登特斯普利植入物制造有限责任公司 假牙和其加工方法

Also Published As

Publication number Publication date
PT2992853T (pt) 2017-02-21
ES2526364B1 (es) 2015-10-15
EP2992853A1 (en) 2016-03-09
WO2015001150A1 (es) 2015-01-08
ES2526364A1 (es) 2015-01-09

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